Checking condition and calling continuous method with periods of delay unity

Question

I want code to check if target is alive, and if yes shoot at it. I want to check it all the time, and shoot all the time, The only problem is that checks can be made anytime

Answer 1

InvokeRepeating( "PossiblyShoot" , 1f, 1f );

private void PossiblyShoot()
   {
   1. check if target still exists
   2. if it exists shoot at it
   }